Results 31 to 40 of about 525,476 (324)
Biomass equations for Castanea sativa high forest in the Northwest of Portugal [PDF]
, 2004 There is considerable interest today in estimating the biomass of trees and forests for practical forestry issues, sustainable management, carbon and nutrient flux and other scientific purposes.
Monteiro, Maria do Loreto +2 more
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European Journal of Remote Sensing, 2023 Many freely available Digital Elevation Models (DEM) have increasingly been used worldwide due to the difficulty in acquiring accurate elevation data in some regions, emphasizing the need to investigate their accuracy and the factors that may influence ...
Zuleide Ferreira +2 more
doaj +1 more source
, 2007 The Maximum Likelihood PCA (MLPCA) method has been devised in chemometrics as a generalization of the well-known PCA method in order to derive consistent estimators in the presence of errors with known error distribution.
Markovsky, Ivan +2 more
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On a Problem of Weighted Low-Rank Approximation of Matrices
, 2017 We study a weighted low rank approximation that is inspired by a problem of constrained low rank approximation of matrices as initiated by the work of Golub, Hoffman, and Stewart (Linear Algebra and Its Applications, 88-89(1987), 317-327).
Dutta, Aritra, Li, Xin
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Low-Dose CT Image Reconstruction With a Deep Learning Prior
IEEE Access, 2020 In low-dose computed tomography (LDCT), a penalized weighted least squares (PWLS) approach that incorporates the Poisson statistics of X-ray photons can significantly reduce excessive quantum noise.
Hyoung Suk Park +2 more
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Association between local-level resources for home care and home deaths: A nationwide spatial analysis in Japan. [PDF]
PLoS ONE, 2018 AIM:Little is known about whether and how local-level resources regarding home care are associated with the prevalence of home deaths. We aimed to investigate whether geographic patterns of the resources for home care were associated with the prevalence ...
Noriko Morioka +5 more
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Meteorologische Zeitschrift, 1996 The daily and monthly data of the total radiation are used for estimation of the relationship between diffuse and total radiation in Hradec Králové. Analyses were expressed in parameters with the use of the method of least squares and a "Robust Locally ...
Michal Janouch
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Geodesy and Geodynamics, 2014 The Gauss-Markov (GM) model and the Errors-in-Variables (EIV) model are frequently used to perform 3D coordinate transformations in geodesy and engineering surveys.
Hu Chuan, Chen Yi
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WTLS iterative algorithm of 3D similarity coordinate transformation based on Gibbs vectors
Earth, Planets and Space, 2020 The 3D similarity coordinate transformation is fundamental and frequently encountered in many areas of work such as geodesy, engineering surveying, LIDAR, terrestrial laser scanning, photogrammetry, machine vision, etc.
Huaien Zeng +3 more
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Estimating satellite and receiver differential code bias using a relative Global Positioning System network [PDF]
Annales Geophysicae, 2019 Precise total electron content (TEC) is required to produce accurate spatial and temporal resolution of global ionosphere maps (GIMs). Receivers and satellite differential code biases (DCBs) are one of the main error sources in estimating precise TEC ...
A. A. Elghazouly +2 more
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